This is a 39/64 Akro Agate milky oxblood swirl marble. The base is an opaque milk white glass. This marble does have a few dings, some caused by impact, some as made, open air bubbles, etc. I am no expert on grading marbles but consider this a near mint minus marble. Because of this I try to give you good pictures of many sides of the marble so be sure and look at them carefully as they are part of the description and can give a much better idea as to condition and quality than what I can do with the written word. Happy Collecting !!!!